mcs/class/corlib/System.Reflection/Assembly.cs

   1 //
   2 // System.Reflection/Assembly.cs
   3 //
   4 // Author:
   5 //   Paolo Molaro (lupus@ximian.com)
   6 //
   7 // (C) 2001 Ximian, Inc.  http://www.ximian.com
   8 // Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining
  11 // a copy of this software and associated documentation files (the
  12 // "Software"), to deal in the Software without restriction, including
  13 // without limitation the rights to use, copy, modify, merge, publish,
  14 // distribute, sublicense, and/or sell copies of the Software, and to
  15 // permit persons to whom the Software is furnished to do so, subject to
  16 // the following conditions:
  17 //
  18 // The above copyright notice and this permission notice shall be
  19 // included in all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28 //
  29
  30 using System.Security;
  31 using System.Security.Policy;
  32 using System.Security.Permissions;
  33 using System.Runtime.Serialization;
  34 using System.Reflection.Emit;
  35 using System.IO;
  36 using System.Globalization;
  37 using System.Runtime.CompilerServices;
  38 using System.Runtime.InteropServices;
  39 using System.Collections;
  40 using System.Configuration.Assemblies;
  41
  42 using Mono.Security;
  43
  44 namespace System.Reflection {
  45
  46 #if NET_2_0
  47         [ComVisible (true)]
  48         [ComDefaultInterfaceAttribute (typeof (_Assembly))]
  49 #endif
  50         [Serializable]
  51         [ClassInterface(ClassInterfaceType.None)]
  52         public class Assembly : System.Reflection.ICustomAttributeProvider, _Assembly,
  53                 System.Security.IEvidenceFactory, System.Runtime.Serialization.ISerializable {
  54
  55                 internal class ResolveEventHolder {
  56                         public event ModuleResolveEventHandler ModuleResolve;
  57                 }
  58
  59                 // Note: changes to fields must be reflected in _MonoReflectionAssembly struct (object-internals.h)
  60 #pragma warning disable 169
  61                 private IntPtr _mono_assembly;
  62 #pragma warning restore 169
  63
  64                 private ResolveEventHolder resolve_event_holder;
  65                 private Evidence _evidence;
  66                 internal PermissionSet _minimum;        // for SecurityAction.RequestMinimum
  67                 internal PermissionSet _optional;       // for SecurityAction.RequestOptional
  68                 internal PermissionSet _refuse;         // for SecurityAction.RequestRefuse
  69                 private PermissionSet _granted;         // for the resolved assembly granted permissions
  70                 private PermissionSet _denied;          // for the resolved assembly denied permissions
  71                 private bool fromByteArray;
  72                 private string assemblyName;
  73
  74                 internal Assembly ()
  75                 {
  76                         resolve_event_holder = new ResolveEventHolder ();
  77                 }
  78
  79                 //
  80                 // We can't store the event directly in this class, since the
  81                 // compiler would silently insert the fields before _mono_assembly
  82                 //
  83                 public event ModuleResolveEventHandler ModuleResolve {
  84                         [SecurityPermission (SecurityAction.LinkDemand, ControlAppDomain = true)]
  85                         add {
  86                                 resolve_event_holder.ModuleResolve += value;
  87                         }
  88                         [SecurityPermission (SecurityAction.LinkDemand, ControlAppDomain = true)]
  89                         remove {
  90                                 resolve_event_holder.ModuleResolve -= value;
  91                         }
  92                 }
  93
  94                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
  95                 private extern string get_code_base (bool escaped);
  96
  97                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
  98                 private extern string get_fullname ();
  99
 100                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 101                 private extern string get_location ();
 102
 103                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 104                 private extern string InternalImageRuntimeVersion ();
 105
 106                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 107                 private extern bool get_global_assembly_cache ();
 108
 109                 // SECURITY: this should be the only caller to icall get_code_base
 110                 private string GetCodeBase (bool escaped)
 111                 {
 112                         string cb = get_code_base (escaped);
 113                         if (SecurityManager.SecurityEnabled) {
 114                                 // we cannot divulge local file informations
 115                                 if (String.Compare ("FILE://", 0, cb, 0, 7, true, CultureInfo.InvariantCulture) == 0) {
 116                                         string file = cb.Substring (7);
 117                                         new FileIOPermission (FileIOPermissionAccess.PathDiscovery, file).Demand ();
 118                                 }
 119                         }
 120                         return cb;
 121                 }
 122
 123                 public virtual string CodeBase {
 124                         get { return GetCodeBase (false); }
 125                 }
 126
 127                 public virtual string EscapedCodeBase {
 128                         get { return GetCodeBase (true); }
 129                 }
 130
 131                 public virtual string FullName {
 132                         get {
 133                                 //
 134                                 // FIXME: This is wrong, but it gets us going
 135                                 // in the compiler for now
 136                                 //
 137                                 return ToString ();
 138                         }
 139                 }
 140
 141                 public virtual extern MethodInfo EntryPoint {
 142                         [MethodImplAttribute (MethodImplOptions.InternalCall)]
 143                         get;
 144                 }
 145
 146                 public virtual Evidence Evidence {
 147                         [SecurityPermission (SecurityAction.Demand, ControlEvidence = true)]
 148                         get { return UnprotectedGetEvidence (); }
 149                 }
 150
 151                 // note: the security runtime requires evidences but may be unable to do so...
 152                 internal Evidence UnprotectedGetEvidence ()
 153                 {
 154                         // if the host (runtime) hasn't provided it's own evidence...
 155                         if (_evidence == null) {
 156                                 // ... we will provide our own
 157                                 lock (this) {
 158                                         _evidence = Evidence.GetDefaultHostEvidence (this);
 159                                 }
 160                         }
 161                         return _evidence;
 162                 }
 163
 164                 public bool GlobalAssemblyCache {
 165                         get {
 166                                 return get_global_assembly_cache ();
 167                         }
 168                 }
 169
 170                 internal bool FromByteArray {
 171                         set { fromByteArray = value; }
 172                 }
 173
 174                 public virtual String Location {
 175                         get {
 176                                 if (fromByteArray)
 177                                         return String.Empty;
 178
 179                                 string loc = get_location ();
 180                                 if ((loc != String.Empty) && SecurityManager.SecurityEnabled) {
 181                                         // we cannot divulge local file informations
 182                                         new FileIOPermission (FileIOPermissionAccess.PathDiscovery, loc).Demand ();
 183                                 }
 184                                 return loc;
 185                         }
 186                 }
 187
 188 #if NET_1_1
 189                 [ComVisible (false)]
 190                 public virtual string ImageRuntimeVersion {
 191                         get {
 192                                 return InternalImageRuntimeVersion ();
 193                         }
 194                 }
 195 #endif
 196
 197                 [SecurityPermission (SecurityAction.LinkDemand, SerializationFormatter = true)]
 198                 public virtual void GetObjectData (SerializationInfo info, StreamingContext context)
 199                 {
 200                         if (info == null)
 201                                 throw new ArgumentNullException ("info");
 202
 203                         UnitySerializationHolder.GetAssemblyData (this, info, context);
 204                 }
 205
 206 #if ONLY_1_1
 207                 public new Type GetType ()
 208                 {
 209                         return base.GetType ();
 210                 }
 211 #endif
 212
 213                 public virtual bool IsDefined (Type attributeType, bool inherit)
 214                 {
 215                         return MonoCustomAttrs.IsDefined (this, attributeType, inherit);
 216                 }
 217
 218                 public virtual object [] GetCustomAttributes (bool inherit)
 219                 {
 220                         return MonoCustomAttrs.GetCustomAttributes (this, inherit);
 221                 }
 222
 223                 public virtual object [] GetCustomAttributes (Type attributeType, bool inherit)
 224                 {
 225                         return MonoCustomAttrs.GetCustomAttributes (this, attributeType, inherit);
 226                 }
 227
 228                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 229                 private extern object GetFilesInternal (String name, bool getResourceModules);
 230
 231                 public virtual FileStream[] GetFiles ()
 232                 {
 233                         return GetFiles (false);
 234                 }
 235
 236                 public virtual FileStream [] GetFiles (bool getResourceModules)
 237                 {
 238                         string[] names = (string[]) GetFilesInternal (null, getResourceModules);
 239                         if (names == null)
 240                                 return new FileStream [0];
 241
 242                         string location = Location;
 243
 244                         FileStream[] res;
 245                         if (location != String.Empty) {
 246                                 res = new FileStream [names.Length + 1];
 247                                 res [0] = new FileStream (location, FileMode.Open, FileAccess.Read);
 248                                 for (int i = 0; i < names.Length; ++i)
 249                                         res [i + 1] = new FileStream (names [i], FileMode.Open, FileAccess.Read);
 250                         } else {
 251                                 res = new FileStream [names.Length];
 252                                 for (int i = 0; i < names.Length; ++i)
 253                                         res [i] = new FileStream (names [i], FileMode.Open, FileAccess.Read);
 254                         }
 255                         return res;
 256                 }
 257
 258                 public virtual FileStream GetFile (String name)
 259                 {
 260                         if (name == null)
 261                                 throw new ArgumentNullException (null, "Name cannot be null.");
 262                         if (name.Length == 0)
 263                                 throw new ArgumentException ("Empty name is not valid");
 264
 265                         string filename = (string)GetFilesInternal (name, true);
 266                         if (filename != null)
 267                                 return new FileStream (filename, FileMode.Open, FileAccess.Read);
 268                         else
 269                                 return null;
 270                 }
 271
 272                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 273                 internal extern IntPtr GetManifestResourceInternal (String name, out int size, out Module module);
 274
 275                 public virtual Stream GetManifestResourceStream (String name)
 276                 {
 277                         if (name == null)
 278                                 throw new ArgumentNullException ("name");
 279                         if (name.Length == 0)
 280                                 throw new ArgumentException ("String cannot have zero length.",
 281                                         "name");
 282
 283                         ManifestResourceInfo info = GetManifestResourceInfo (name);
 284                         if (info == null)
 285                                 return null;
 286
 287                         if (info.ReferencedAssembly != null)
 288                                 return info.ReferencedAssembly.GetManifestResourceStream (name);
 289                         if ((info.FileName != null) && (info.ResourceLocation == 0)) {
 290                                 if (fromByteArray)
 291 #if NET_2_0
 292                                         throw new FileNotFoundException (info.FileName);
 293 #else
 294                                         return null;
 295 #endif
 296
 297                                 string filename = Path.Combine (Path.GetDirectoryName (Location),
 298                                                                                         info.FileName);
 299                                 return new FileStream (filename, FileMode.Open, FileAccess.Read);
 300                         }
 301
 302                         int size;
 303                         Module module;
 304                         IntPtr data = GetManifestResourceInternal (name, out size, out module);
 305                         if (data == (IntPtr) 0)
 306                                 return null;
 307                         else {
 308 #if NET_2_0
 309                                 UnmanagedMemoryStream stream;
 310                                 unsafe {
 311                                         stream = new UnmanagedMemoryStream ((byte*) data, size);
 312                                 }
 313 #else
 314                                 IntPtrStream stream = new IntPtrStream (data, size);
 315 #endif
 316                                 /*
 317                                  * The returned pointer points inside metadata, so
 318                                  * we have to increase the refcount of the module, and decrease
 319                                  * it when the stream is finalized.
 320                                  */
 321                                 stream.Closed += new EventHandler (new ResourceCloseHandler (module).OnClose);
 322                                 return stream;
 323                         }
 324                 }
 325
 326                 public virtual Stream GetManifestResourceStream (Type type, String name)
 327                 {
 328                         string ns;
 329                         if (type != null) {
 330                                 ns = type.Namespace;
 331                         } else {
 332                                 if (name == null)
 333                                         throw new ArgumentNullException ("type");
 334                                 ns = null;
 335                         }
 336
 337                         if (ns == null || ns.Length == 0)
 338                                 return GetManifestResourceStream (name);
 339                         else
 340                                 return GetManifestResourceStream (ns + "." + name);
 341                 }
 342
 343                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 344                 internal virtual extern Type[] GetTypes (bool exportedOnly);
 345
 346                 public virtual Type[] GetTypes ()
 347                 {
 348                         return GetTypes (false);
 349                 }
 350
 351                 public virtual Type[] GetExportedTypes ()
 352                 {
 353                         return GetTypes (true);
 354                 }
 355
 356                 public virtual Type GetType (String name, Boolean throwOnError)
 357                 {
 358                         return GetType (name, throwOnError, false);
 359                 }
 360
 361                 public virtual Type GetType (String name) {
 362                         return GetType (name, false, false);
 363                 }
 364
 365                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 366                 internal extern Type InternalGetType (Module module, String name, Boolean throwOnError, Boolean ignoreCase);
 367
 368                 public Type GetType (string name, bool throwOnError, bool ignoreCase)
 369                 {
 370                         if (name == null)
 371                                 throw new ArgumentNullException (name);
 372
 373                         return InternalGetType (null, name, throwOnError, ignoreCase);
 374                 }
 375
 376                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 377                 internal extern static void InternalGetAssemblyName (string assemblyFile, AssemblyName aname);
 378
 379                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 380                 static extern void FillName (Assembly ass, AssemblyName aname);
 381
 382                 [MonoTODO ("copiedName == true is not supported")]
 383                 public virtual AssemblyName GetName (Boolean copiedName)
 384                 {
 385                         // CodeBase, which is restricted, will be copied into the AssemblyName object so...
 386                         if (SecurityManager.SecurityEnabled) {
 387                                 GetCodeBase (true); // this will ensure the Demand is made
 388                         }
 389                         return UnprotectedGetName ();
 390                 }
 391
 392                 public virtual AssemblyName GetName ()
 393                 {
 394                         return GetName (false);
 395                 }
 396
 397                 // the security runtime requires access to the assemblyname (e.g. to get the strongname)
 398                 internal virtual AssemblyName UnprotectedGetName ()
 399                 {
 400                         AssemblyName aname = new AssemblyName ();
 401                         FillName (this, aname);
 402                         return aname;
 403                 }
 404
 405                 public override string ToString ()
 406                 {
 407                         // note: ToString work without requiring CodeBase (so no checks are needed)
 408
 409                         if (assemblyName != null)
 410                                 return assemblyName;
 411
 412                         assemblyName = get_fullname ();
 413                         return assemblyName;
 414                 }
 415
 416                 public static String CreateQualifiedName (String assemblyName, String typeName)
 417                 {
 418                         return typeName + ", " + assemblyName;
 419                 }
 420
 421                 public static Assembly GetAssembly (Type type)
 422                 {
 423                         if (type != null)
 424                                 return type.Assembly;
 425                         throw new ArgumentNullException ("type");
 426                 }
 427
 428
 429                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 430                 public static extern Assembly GetEntryAssembly();
 431
 432                 public Assembly GetSatelliteAssembly (CultureInfo culture)
 433                 {
 434                         return GetSatelliteAssembly (culture, null);
 435                 }
 436
 437                 public Assembly GetSatelliteAssembly (CultureInfo culture, Version version)
 438                 {
 439                         if (culture == null)
 440                                 throw new ArgumentException ("culture");
 441
 442                         AssemblyName aname = GetName (true);
 443                         if (version != null)
 444                                 aname.Version = version;
 445
 446                         aname.CultureInfo = culture;
 447                         aname.Name = aname.Name + ".resources";
 448                         Assembly assembly = AppDomain.CurrentDomain.LoadSatellite (aname);
 449                         if (assembly != null)
 450                                 return assembly;
 451
 452                         // Try the assembly directory
 453                         string fullName = Path.Combine (Path.GetDirectoryName (Location), Path.Combine (culture.Name, aname.Name + ".dll"));
 454                         return LoadFrom (fullName);
 455                 }
 456
 457                 internal Assembly GetSatelliteAssemblyNoThrow (CultureInfo culture, Version version)
 458                 {
 459                         if (culture == null)
 460                                 throw new ArgumentException ("culture");
 461
 462                         AssemblyName aname = GetName (true);
 463                         if (version != null)
 464                                 aname.Version = version;
 465
 466                         aname.CultureInfo = culture;
 467                         aname.Name = aname.Name + ".resources";
 468                         Assembly assembly = AppDomain.CurrentDomain.LoadSatellite (aname);
 469                         if (assembly != null)
 470                                 return assembly;
 471
 472                         // Try the assembly directory
 473                         string fullName = Path.Combine (Path.GetDirectoryName (Location), Path.Combine (culture.Name, aname.Name + ".dll"));
 474                         if (!File.Exists (fullName))
 475                                 return null;
 476                         return LoadFrom (fullName);
 477                 }
 478
 479                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 480                 private extern static Assembly LoadFrom (String assemblyFile, bool refonly);
 481
 482                 public static Assembly LoadFrom (String assemblyFile)
 483                 {
 484                         return LoadFrom (assemblyFile, false);
 485                 }
 486
 487                 public static Assembly LoadFrom (String assemblyFile, Evidence securityEvidence)
 488                 {
 489                         Assembly a = LoadFrom (assemblyFile, false);
 490                         if ((a != null) && (securityEvidence != null)) {
 491                                 // merge evidence (i.e. replace defaults with provided evidences)
 492                                 a.Evidence.Merge (securityEvidence);
 493                         }
 494                         return a;
 495                 }
 496
 497 #if NET_1_1
 498
 499                 [MonoTODO("This overload is not currently implemented")]
 500                 // FIXME: What are we missing?
 501                 public static Assembly LoadFrom (String assemblyFile, Evidence securityEvidence, byte[] hashValue, AssemblyHashAlgorithm hashAlgorithm)
 502                 {
 503                         if (assemblyFile == null)
 504                                 throw new ArgumentNullException ("assemblyFile");
 505                         if (assemblyFile == String.Empty)
 506                                 throw new ArgumentException ("Name can't be the empty string", "assemblyFile");
 507                         throw new NotImplementedException ();
 508                 }
 509
 510                 public static Assembly LoadFile (String path, Evidence securityEvidence)
 511                 {
 512                         if (path == null)
 513                                 throw new ArgumentNullException ("path");
 514                         if (path == String.Empty)
 515                                 throw new ArgumentException ("Path can't be empty", "path");
 516                         // FIXME: Make this do the right thing
 517                         return LoadFrom (path, securityEvidence);
 518                 }
 519
 520                 public static Assembly LoadFile (String path)
 521                 {
 522                         return LoadFile (path, null);
 523                 }
 524 #endif
 525
 526                 public static Assembly Load (String assemblyString)
 527                 {
 528                         return AppDomain.CurrentDomain.Load (assemblyString);
 529                 }
 530
 531                 public static Assembly Load (String assemblyString, Evidence assemblySecurity)
 532                 {
 533                         return AppDomain.CurrentDomain.Load (assemblyString, assemblySecurity);
 534                 }
 535
 536                 public static Assembly Load (AssemblyName assemblyRef)
 537                 {
 538                         return AppDomain.CurrentDomain.Load (assemblyRef);
 539                 }
 540
 541                 public static Assembly Load (AssemblyName assemblyRef, Evidence assemblySecurity)
 542                 {
 543                         return AppDomain.CurrentDomain.Load (assemblyRef, assemblySecurity);
 544                 }
 545
 546                 public static Assembly Load (Byte[] rawAssembly)
 547                 {
 548                         return AppDomain.CurrentDomain.Load (rawAssembly);
 549                 }
 550
 551                 public static Assembly Load (Byte[] rawAssembly, Byte[] rawSymbolStore)
 552                 {
 553                         return AppDomain.CurrentDomain.Load (rawAssembly, rawSymbolStore);
 554                 }
 555
 556                 public static Assembly Load (Byte[] rawAssembly, Byte[] rawSymbolStore,
 557                                              Evidence securityEvidence)
 558                 {
 559                         return AppDomain.CurrentDomain.Load (rawAssembly, rawSymbolStore, securityEvidence);
 560                 }
 561
 562 #if NET_2_0 || BOOTSTRAP_NET_2_0
 563                 public static Assembly ReflectionOnlyLoad (byte[] rawAssembly)
 564                 {
 565                         return AppDomain.CurrentDomain.Load (rawAssembly, null, null, true);
 566                 }
 567
 568                 public static Assembly ReflectionOnlyLoad (string assemblyString)
 569                 {
 570                         return AppDomain.CurrentDomain.Load (assemblyString, null, true);
 571                 }
 572
 573                 public static Assembly ReflectionOnlyLoadFrom (string assemblyFile)
 574                 {
 575                         if (assemblyFile == null)
 576                                 throw new ArgumentNullException ("assemblyFile");
 577
 578                         return LoadFrom (assemblyFile, true);
 579                 }
 580 #endif
 581
 582 #if NET_2_0
 583                 [Obsolete ("")]
 584 #endif
 585                 public static Assembly LoadWithPartialName (string partialName)
 586                 {
 587                         return LoadWithPartialName (partialName, null);
 588                 }
 589
 590                 [MonoTODO ("Not implemented")]
 591                 public Module LoadModule (string moduleName, byte [] rawModule)
 592                 {
 593                         throw new NotImplementedException ();
 594                 }
 595
 596                 [MonoTODO ("Not implemented")]
 597                 public Module LoadModule (string moduleName, byte [] rawModule, byte [] rawSymbolStore)
 598                 {
 599                         throw new NotImplementedException ();
 600                 }
 601
 602                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 603                 private static extern Assembly load_with_partial_name (string name, Evidence e);
 604
 605 #if NET_2_0
 606                 [Obsolete ("")]
 607 #endif
 608                 public static Assembly LoadWithPartialName (string partialName, Evidence securityEvidence)
 609                 {
 610                         return LoadWithPartialName (partialName, securityEvidence, true);
 611                 }
 612
 613                 /**
 614                  * LAMESPEC: It is possible for this method to throw exceptions IF the name supplied
 615                  * is a valid gac name and contains filesystem entry charachters at the end of the name
 616                  * ie System/// will throw an exception. However ////System will not as that is canocolized
 617                  * out of the name.
 618                  */
 619
 620                 // FIXME: LoadWithPartialName must look cache (no CAS) or read from disk (CAS)
 621                 internal static Assembly LoadWithPartialName (string partialName, Evidence securityEvidence, bool oldBehavior)
 622                 {
 623                         if (!oldBehavior)
 624                                 throw new NotImplementedException ();
 625
 626                         if (partialName == null)
 627                                 throw new NullReferenceException ();
 628
 629                         return load_with_partial_name (partialName, securityEvidence);
 630                 }
 631
 632                 public Object CreateInstance (String typeName)
 633                 {
 634                         return CreateInstance (typeName, false);
 635                 }
 636
 637                 public Object CreateInstance (String typeName, Boolean ignoreCase)
 638                 {
 639                         Type t = GetType (typeName, false, ignoreCase);
 640                         if (t == null)
 641                                 return null;
 642
 643                         try {
 644                                 return Activator.CreateInstance (t);
 645                         } catch (InvalidOperationException) {
 646                                 throw new ArgumentException ("It is illegal to invoke a method on a Type loaded via ReflectionOnly methods.");
 647                         }
 648                 }
 649
 650                 public Object CreateInstance (String typeName, Boolean ignoreCase,
 651                                               BindingFlags bindingAttr, Binder binder,
 652                                               Object[] args, CultureInfo culture,
 653                                               Object[] activationAttributes)
 654                 {
 655                         Type t = GetType (typeName, false, ignoreCase);
 656                         if (t == null)
 657                                 return null;
 658
 659                         try {
 660                                 return Activator.CreateInstance (t, bindingAttr, binder, args, culture, activationAttributes);
 661                         } catch (InvalidOperationException) {
 662                                 throw new ArgumentException ("It is illegal to invoke a method on a Type loaded via ReflectionOnly methods.");
 663                         }
 664                 }
 665
 666                 public Module[] GetLoadedModules ()
 667                 {
 668                         return GetLoadedModules (false);
 669                 }
 670
 671                 // FIXME: Currently, the two sets of modules are equal
 672                 public Module[] GetLoadedModules (bool getResourceModules)
 673                 {
 674                         return GetModules (getResourceModules);
 675                 }
 676
 677                 public Module[] GetModules ()
 678                 {
 679                         return GetModules (false);
 680                 }
 681
 682                 public Module GetModule (String name)
 683                 {
 684                         if (name == null)
 685                                 throw new ArgumentNullException ("name");
 686                         if (name.Length == 0)
 687                                 throw new ArgumentException ("Name can't be empty");
 688
 689                         Module[] modules = GetModules (true);
 690                         foreach (Module module in modules) {
 691                                 if (module.ScopeName == name)
 692                                         return module;
 693                         }
 694
 695                         return null;
 696                 }
 697
 698                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 699                 internal virtual extern Module[] GetModulesInternal ();
 700
 701                 public Module[] GetModules (bool getResourceModules) {
 702                         Module[] modules = GetModulesInternal ();
 703
 704                         if (!getResourceModules) {
 705                                 ArrayList result = new ArrayList (modules.Length);
 706                                 foreach (Module m in modules)
 707                                         if (!m.IsResource ())
 708                                                 result.Add (m);
 709                                 return (Module[])result.ToArray (typeof (Module));
 710                         }
 711                         else
 712                                 return modules;
 713                 }
 714
 715                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 716                 internal extern string[] GetNamespaces ();
 717
 718                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 719                 public extern virtual String[] GetManifestResourceNames ();
 720
 721                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 722                 public extern static Assembly GetExecutingAssembly ();
 723
 724                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 725                 public extern static Assembly GetCallingAssembly ();
 726
 727                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 728                 public extern AssemblyName[] GetReferencedAssemblies ();
 729
 730                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 731                 private extern bool GetManifestResourceInfoInternal (String name, ManifestResourceInfo info);
 732
 733                 public virtual ManifestResourceInfo GetManifestResourceInfo (String resourceName)
 734                 {
 735                         if (resourceName == null)
 736                                 throw new ArgumentNullException ("resourceName");
 737                         if (resourceName.Length == 0)
 738                                 throw new ArgumentException ("String cannot have zero length.");
 739                         ManifestResourceInfo result = new ManifestResourceInfo ();
 740                         bool found = GetManifestResourceInfoInternal (resourceName, result);
 741                         if (found)
 742                                 return result;
 743                         else
 744                                 return null;
 745                 }
 746
 747                 private class ResourceCloseHandler {
 748 #pragma warning disable 169, 414
 749                         Module module;
 750 #pragma warning restore 169, 414
 751
 752                         public ResourceCloseHandler (Module module) {
 753                                 this.module = module;
 754                         }
 755
 756                         public void OnClose (object sender, EventArgs e) {
 757                                 // The module dtor will take care of things
 758                                 module = null;
 759                         }
 760                 }
 761
 762                 //
 763                 // The following functions are only for the Mono Debugger.
 764                 //
 765
 766                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 767                 internal static extern int MonoDebugger_GetMethodToken (MethodBase method);
 768
 769 #if NET_2_0 || BOOTSTRAP_NET_2_0
 770                 [MonoTODO ("Always returns zero")]
 771                 [ComVisible (false)]
 772                 public long HostContext {
 773                         get { return 0; }
 774                 }
 775
 776                 [ComVisible (false)]
 777                 public Module ManifestModule {
 778                         get {
 779                                 return GetManifestModule ();
 780                         }
 781                 }
 782
 783                 internal virtual Module GetManifestModule () {
 784                         return GetManifestModuleInternal ();
 785                 }
 786
 787                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 788                 internal extern Module GetManifestModuleInternal ();
 789
 790                 [ComVisible (false)]
 791                 public virtual extern bool ReflectionOnly {
 792                         [MethodImplAttribute (MethodImplOptions.InternalCall)]
 793                         get;
 794                 }
 795 #endif
 796
 797                 // Code Access Security
 798
 799                 internal void Resolve ()
 800                 {
 801                         lock (this) {
 802                                 // FIXME: As we (currently) delay the resolution until the first CAS
 803                                 // Demand it's too late to evaluate the Minimum permission set as a
 804                                 // condition to load the assembly into the AppDomain
 805                                 LoadAssemblyPermissions ();
 806                                 Evidence e = new Evidence (UnprotectedGetEvidence ()); // we need a copy to add PRE
 807                                 e.AddHost (new PermissionRequestEvidence (_minimum, _optional, _refuse));
 808                                 _granted = SecurityManager.ResolvePolicy (e,
 809                                         _minimum, _optional, _refuse, out _denied);
 810                         }
 811                 }
 812
 813                 internal PermissionSet GrantedPermissionSet {
 814                         get {
 815                                 if (_granted == null) {
 816                                         if (SecurityManager.ResolvingPolicyLevel != null) {
 817                                                 if (SecurityManager.ResolvingPolicyLevel.IsFullTrustAssembly (this))
 818                                                         return DefaultPolicies.FullTrust;
 819                                                 else
 820                                                         return null; // we can't resolve during resolution
 821                                         }
 822                                         Resolve ();
 823                                 }
 824                                 return _granted;
 825                         }
 826                 }
 827
 828                 internal PermissionSet DeniedPermissionSet {
 829                         get {
 830                                 // yes we look for granted, as denied may be null
 831                                 if (_granted == null) {
 832                                         if (SecurityManager.ResolvingPolicyLevel != null) {
 833                                                 if (SecurityManager.ResolvingPolicyLevel.IsFullTrustAssembly (this))
 834                                                         return null;
 835                                                 else
 836                                                         return DefaultPolicies.FullTrust; // deny unrestricted
 837                                         }
 838                                         Resolve ();
 839                                 }
 840                                 return _denied;
 841                         }
 842                 }
 843
 844                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 845                 extern internal static bool LoadPermissions (Assembly a,
 846                         ref IntPtr minimum, ref int minLength,
 847                         ref IntPtr optional, ref int optLength,
 848                         ref IntPtr refused, ref int refLength);
 849
 850                 // Support for SecurityAction.RequestMinimum, RequestOptional and RequestRefuse
 851                 private void LoadAssemblyPermissions ()
 852                 {
 853                         IntPtr minimum = IntPtr.Zero, optional = IntPtr.Zero, refused = IntPtr.Zero;
 854                         int minLength = 0, optLength = 0, refLength = 0;
 855                         if (LoadPermissions (this, ref minimum, ref minLength, ref optional,
 856                                 ref optLength, ref refused, ref refLength)) {
 857
 858                                 // Note: no need to cache these permission sets as they will only be created once
 859                                 // at assembly resolution time.
 860                                 if (minLength > 0) {
 861                                         byte[] data = new byte [minLength];
 862                                         Marshal.Copy (minimum, data, 0, minLength);
 863                                         _minimum = SecurityManager.Decode (data);
 864                                 }
 865                                 if (optLength > 0) {
 866                                         byte[] data = new byte [optLength];
 867                                         Marshal.Copy (optional, data, 0, optLength);
 868                                         _optional = SecurityManager.Decode (data);
 869                                 }
 870                                 if (refLength > 0) {
 871                                         byte[] data = new byte [refLength];
 872                                         Marshal.Copy (refused, data, 0, refLength);
 873                                         _refuse = SecurityManager.Decode (data);
 874                                 }
 875                         }
 876                 }
 877         }
 878 }